​Students tell us about the caliber of their private professors and how much they have to pay them for their classes. We attempt an outline of private teaching that is emerging in a hidden and progressive way and that now, because of the deficiencies in state education, extends to all levels, from elementary school to the university.​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​